Member or structure vibrated by energy impulses



July 7, 1931. F. A; STAPLER MEMBER OR STRUCTURE VIBRATJ QD BY ENERGYIMPULSES Original Filed-Oct. 10, 1928 Patented July 7, 1931 UNITEDSTATES.

Parent caries FLORICEL A. STAPLER, OF PHILADELPHIA, PENNSYLVANIA,ASSIGNOR TO VICTOR TALKING MACHINE COMPANY, A CORPORATIGN OF NEW JERSEYMEMBER OR STRUCTURE VIBRATED BY ENERGY IMPULSES Application filedOctober 10, 1928, Serial No. 312,911.

My invention relates to a member or structure partaking of vibratorymotion under the influence of energy impulses having a frequency,usually, varying between 16 and 20,000 cycles per second or those havinga frequency of the order usually encountered in speech or musictransmission.

My invention relates to a member or structure, as aforesaid, utilized totransmit or transfer energy impulses, as aforesaid, from one region toanother or from a transmitting member to a receiving member.

My invention relates to a member or structure, as aforesaid, as an armor bar to which vibratory motion is imparted by a transmitting member orsystem, as a phonograph record or a magnetic structure, the energyimpulses actuating or controlling a suitable receiving member or system,as a diaphragm, armature, or the flux in a magnetic circuit.

In accordance with my invention, a memher or structure, as aforesaidcomprises a single elementor part including a web section from whichprojects spaced wing hinges and a hinge connecting neck. 7

F urth-er in accordance with my invention, the aforesaid member orstructure comprises a single element or part having spaced wallsconnected by a transverse wall, the aforesaid web section being disposedin the plane of said transverse wall and the aforesaid wing hinges andhinge connecting neck being disposed substantially at right angles tosaid Web section.

Further in accordance with my invention, a flange is formed on achambered element or part, as aforesaid, transversely of the longi-.tudinal axis thereof, and said flange is received by a slot or channelprovided in a member, one end of which is disposed within said elementor part.

In accordance with one important phase of my invention, the aforesaidmember or structure is an arm or bar carrying, at one end, a stylus orneedle, the other end thereof being connected to a sound-producingdiaphragm. The detailed description following hereafter refers to aconstruction of the character last described, although it shall beunderstood that my invention is not to be thus limited,

Renewed January 6, 1931.

My invention resides in the member or structure, article, method andfeatures of construction of the character hereinafter described andclaimed.

For an illustration of some of the forms my novel member or structure,or article may take and for an-understanding of my method, reference istobe had to the accompanying drawings in which:

Figure 1 is a perspective view, partly broken away, of separate parts ofa needle arm or stylus bar constructedin accordance with my invention.

Fig. 2 is a vertical sectional view, partly in elevation, of thestructures shown in Fig. 1.

Fig. 3 is a vertical sectional View, partly in elevation, of thestructures illustrated in Fig. 2 after they have been assembled.

Fig. 4 is a vertical sectional view, partly in elevation, of my novelneedle arm or stylus bar and associated parts of a sound box.

Fig. 5 is a front elevational view of a part sheet material is brought,by a series of shaping operations, to the configuration of the member A,Fig. 1. As illustrated in Fig. 1, member A comprises a hollow,circumferentially complete body portion formed 'by side walls a, a, atopwall b and a bottom wall 0, the latter comprising flanges, solderedor otherwise suitably secured together, said fianges,-previous to theshaping operation,

constituting the outer edges of the blank or stamping. Forming anextension of one end of the wall 6 is a member cl while from the otherend of said wall I) and extending beyond each side thereof is a websection 6 disposed in the plane of the said wallb.

Disposed at right angles or substantially so, in the example shown, tothe web section a are the spaced wing or pivot hinges f, f.

V accordance with my invention, said ing hinges f, f are connected by aneck or flange g disposed in a plane common to said wing hinges f, f andpositioned at right angles, or substantially so, to the web section 6.

The aforesaid member ii, at one end there of, as hereinafter moreparticularly described, is connected to a diaphragm, or equivalent, bythe member (Z. The other end of member A is secured or attached to atalkin -machinestylus-retaining-member B, or equivalent, which, in theexample illustrated, and as more particularly describedin the aforesaidMallina application is generally rectangular in configuration andcomprises solid body of metal formed, pref rab y, by a stampingoperation. The upper si ace of member B illustrated in Figs. 1, 2 and 3com arises a lug or extension h and, in accordance with my in vention, acrosswise slot which, among others has the function of locating theposition at which member B is secured to member A. The bottom surface ofmember B comprises a shouldered portion the rear surface there of,preferably, being inclined as indicated at is. Disposed axially of themember in and extending a suitable distance thereinto is a passage oropening for the reception of a talking machine needle or stylus m, l,retained in ihe position illustrated ;y the shank of a clamping screw a;threaded into a passage opening into the aforesaid passage substantiallyat right angles with respect thereto and passing through the lug h.

In accordance with my invention and to the end that the aforesaidmembers A and B may be assembled, web section a, necl: g and hinge wingsf, f are bent into the position illustrated by the broken lines in Fig.2. Thereafter, the sloping and shouldered end of the member B is passedfrom right to left, 2-, into the open end of the chainbe formed by tl ewalls a, a, Z), and 0 until the shouldered portion j engages with theadjacent end of the bottom wall 0. Tli reupon, the web section a, flange9 and hinge wings f, f are restored to substantially their origition, towit, the position illustrated by 2. In so doir the 1 ()1 central portionor the necl: or flange g is passed into the slot 2' of member B. Thusassembled, it is desirable that ill- 1i or contacting surfaces besoldered together.

A needle arm 'or stylus bar of Lhe character hereinbefore described isillustrated in Fig. as forming part of talking machine or phonographsound box. Tl 's sound box may be of any suitable character and in Fig.a is shown as comprising a base section 1 terminating in a tubularconduit 16; adapted to be associated with the tone arm of a soundamplifying horn. A diaphragm 2 of any 'iable character. which, however,in the example illustrated, is of the type illustrated in my co-pendingapplication, Serial No. 311,553, filed Oct. 10, 1928, is received at itsa 0 di ne-nsicned paths for the propagated sound 'aves.

n the example illustrated, the needle arm or stylus bar is secured tothe diaphragm 2 only at the midpoint thereof, the member (Z constitutinga tie member between the needle arm proper and the diaphragm, said.meni- (Z, in the example shown, passing through a bushing disposedcentrally of the diaphragm and being suitably secured thereto as by a 2we of wax or solder, not shown.

The w E constitute the hinging or her ngs f, 7 'TOttll support for tlieneedle arm or stylus r and they may be supported inany suitle manner. Tothis end, in the example down, the cap section 4; is provided with theeggs or members 7 projecting laterally thererem, each of the aforesaidwings f, 7 being *ved between one face of a lug 7 and a or member 8. Inthe example shown, .ch wing f is provided, during the stampmg operation,with a passage f1, through each of which and alined passages in a lug'l' and member 8, extends a bolt 9 for clamping the wings and forpivotally'mounting the need e arm in the position illustrated in h 4 1 ii. In this manner, the needle arm may be mounted for hinging or pivotalmovement and, due to the fact thatthe wings f, f are constructed ofresilient material, said needle arm s self-restoring in the sense that,of its own volition, it tends to return to an original position afterbeing moved from such position.

Energy impulses set up by the phonograph or talking machine record aretransmitted to the sound producing diaphragm by the thereto-connectedneedle arm or stylus bar. It is highly desirable, therefore, that thelatter be so constructed as to be freely vibratable in one plane,readily restorable to an original position, and resistant to vibrationin planes other than said one plane. A needle arm constructed andmounted as hereinbefoi'e described and illustrated is readily movable orvibratable only in the forward and reverse directionin which it moveswhen moving the diaphragm 2 orthecentral portion thereof side-wise ineither direction. In other words, if the partswere positionedasillustrated in Fig. l, the needle arm would be readily vibratable iiithe plane of paper, the pivotal or hinging axis of said needle arm beingdisposed in those portions of the wings f, f beyond the lugs 7.

At the same time, due to the construction and arrangement of parts, theneedle arm is not freely vibratable or movable in a directionlongitudinally thereof, nor in that direction in which it would moveunder the influence of friction imposed by the record which, were theparts positioned as illustrated in Fig. i, would be substantially atright angles to the plane of the paper. The nonvibratory or non-movablefeatures of the needle arm noted immediately above arise primarily dueto the provision of the web section 6 which remains in the originalplane of the wall Z). This web section 6 and neck 9 connect the wings f,f and constitute a structural angle section which efl ectively impedesand substantially prevents needle arm movement longitudinally thereofand in the direc: tion imposed by record friction, as aforesaid.Moreover, said web section 6 and the connecting neck 9, in efl'ect, forma truss or support which braces the wings f, f and the shaped bodyportion of the member A.

A needle arm or stylus bar constructed and mounted in accordance with myinvention, besides possessing the desirable pivotal or hingingcharacteristic noted above, is of minimum weight, particularly thematerial from which the member A was formed, which may be elastic orresilient in character, as steel or bronze having a thickness of theorder of 0.008 of an inch, more or less. Due to this feature, the momentof inertia about the needle arm pivotal or hinging axis is small and, asa result, the quality of sound production is improved.

It is highly desirable that the connecting tie member d be formedintegrally with the needle arm proper and this may readily beaccomplished by forming the part ZZ by the same die structure that formsthe blank from which the member A is formed. Moreover, since thematerial forming the member A is very thin, it follows that the mass ofthe tie member (Z is kept small, this being'highly desirable.

The tie member cZ may lead direct to the diaphragm or, preferably and asillustrated, the connection may be circuitous and comprise a U-shapedbend 6Z1, or equivalent, by virtue of which the flexibility of the tieconnection is improved. It should also be noted that there is a portion(Z2 of the tie member cZ beyond the hollow, circumferentially completebody portion of member A. This portion (Z2 of the tie member issubstantially in alinement with wall Z2 and, during a period of soundproduction, flexing or giving action in the needle arm proper largelyoccurs in said portion (Z2.

Although the aforesaid members, structure, bars or arms have beenillustrated and described as operated by a phonograph or talking machinerecord, it shall be under-' stood that my invention is not to be thuslimited. Thus, for example, said members, structure, bars or arms may bemagnetically actuated, the needle or stylus, in such case, beingomitted.

Although the hereinbefore described members, structures, bars or armshave been specifically referred to for diaphragm-actuating purposes, itshall be distinctly understood that my invention is not to be limited tosuch an arrangement.

Thus, for example, said members, strucsection and connected thereto, anda neck portion connecting said wing hinges and angularly related to sa1dweb section.

2. A vibratable member for transmitting energy impulses from one regionto another, said member comprising a single shaped member of sheetmaterial terminating at one end in a web section, spaced wing hingesangularly related to said web section and connected thereto, and a neckportion connecting said wing hinges and angularly related to said websection.

3. A vibratable member for transmitting energy impulses from one regionto another,

sa1d member comprising a single shaped member of shect material having ahollow, circumferentially complete portion substantially rectangular incross-section, one wall of said hollow portion terminating in a Websection, spaced wing hinges angularly related to said web section andconnected thereto, and a neck portion connecting said wing hinges andangularly related to said Web section.

4. A vibratable member for transmitting energy impulses from one regionto another, said member comprising a. single shaped member of sheetmaterial having spaced walls connected by a transverse wall terminatingin a web section, spaced wing hinges angularly related to said websection and connected thereto, and a neck portion connecting said winghinges and angularly related to said web section.

5. A vibratable member for transmitting energy impulses from one regionto another, said member comprising a single shaped member of sheetmaterial having spaced walls connected by a transverse wall, saidtransverse wall terminating in a web section extending beyond each sidethereof, spaced wing hinges disposed in a single plane substantially atright angles to said web section and formed integrally therewith, and aneck portion disposed in said plane and formed integrally with said websection and with said wing hinges.

6. A vibratable member comprising an eniongateddiaphragm-connecting-element, and a talking-machinestylus-retaining-element, one of said elements having a flangetransversely disposed with respect to its longitudinal axis, and formedintegrally therewith, and the other of said elements having a slot forthe reception of said flange.

7 A vibrata-ble member comprising an elongated diaphragm-connectingelement, and a talking-machine-stylns-retaining-eleinent, said firstnamed element being formed from a single piece of sheet material andhaving spaced walls connected by a transverse wall terminating in aflanged web section, the end of said second named element being receivedbetween said walls and comprising a slot for the reception of the flangeof said web section.

8. A vibratable member comprising an elongated diaphragm-connectingelement, and a talking-machine-stylus-retaining-element, said firstnamed element being shaped from a single piece of sheet material andhaving spaced walls connected by a transverse wall terminating in a websection having spaced wing hinges and a connecting neck angularlyrelated with respect thereto, the end of said second named element beingreceived between said walls and comprising a slot for the reception ofsaid connecting nets. 7

9. A stylus arm or bar comprising a hollow member, laterally extendingwings secured thereto and a st lus holdin member secured to said memberand wings.

In testimony whereof I have signed this specification this 27th day 01":September,

FLORICEL A. STAPLER.

